MAX6947 Maxim Integrated Products, MAX6947 Datasheet - Page 6

• Manufacturer Part Number: MAX6947
• Description: Constant-Current LED Drivers and I/O Expanders
• Manufacturer: Maxim Integrated Products

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10-Port, Constant-Current LED Drivers and
I/O Expanders with PWM Intensity Control
6
1–5, 7–11
_______________________________________________________________________________________
PAD
PIN
12
13
14
15
16
6
(MAX6946)
(MAX6947)
NAME
P0–P9
**MAX6946 ONLY.
**MAX6947 ONLY.
GND
OSC
AD0
SDA
RST
V
SCL
EP
DD
ADO**
SCL
SDA
RST
OSC*
I/O Ports. Configure P0–P9 as open-drain, current-sink outputs rated at 20mA maximum, as CMOS-
logic inputs, or as open-drain logic outputs. Connect loads to a supply voltage no higher than 7V.
Ground
External Oscillator Input
Address Input. Sets the device slave address. See Table 10.
Active-Low Reset Input
Positive Supply Voltage. Bypass V
I
I
Exposed Pad on Package Underside. Connect to GND.
2
2
C-Compatible, Serial-Clock Input
C-Compatible, Serial-Data I/O
MAX6946
MAX6947
EXTERNAL CLOCK INPUT*
CURRENT REFERENCE
OSCILLATOR
INTERNAL
CONFIGURATION
REGISTER
DD
2-WIRE SERIAL INTERFACE
RAMP-UP/RAMP-DOWN
to GND with a 0.1µF ceramic capacitor.
PWM CONTROLLER
CONTROLS
FUNCTION
I/O REGISTER
I/O PORTS
Pin Description
Block Diagram
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9